For The Collected Stories of Carol Emshwiller, publisher Nonstop seeks unpublished story sold at Wiscon

Nonstop Press is planning to publish The Collected Stories of Carol Emshwiller next year. Senior Editor Luis Ortiz tells us the table of contents for the book is “petty much all of Carol’s published stories, going back to the start of her career in the 1950’s.”
Related to the impending publication, Ortiz is “trying to locate the person who bought ‘The Man Who Saw Saturn’ at the James Tiptree, Jr. Award auction at Wiscon,” which was held the last weekend in May. “The Man Who Saw Saturn” is “an early Carol Emshwiller story of 2,200 words, sold to James Blish for a science fiction magazine that never came out.” Nonstop’s agreement with Emshwiller is “for published stories, so ‘The Man Who Saw Saturn’ kinda falls in between the cracks. I have not seen this story and it appears that Carol did not keep a copy of it.”
Ortiz can be contacted at nonstop at nonstop-press dot com.
Emshwiller is the winner of the Philip K. Dick Award and the World Fantasy Award, as well as a recipient of both a New York State and a National Endowment for the Arts grants.